超多喷孔喷油嘴喷雾特性试验研究  

Experimental Investigation on Fuel Injection Rate of UMH Nozzle

作　　者：缪雪龙[1] 王先勇[1] 俞建达[1] 洪建海[1] 郑金保[1] 房志红[1] 黄震[2] 乔信起[2] 贾文佐 

机构地区：[1]无锡油泵油嘴研究所,江苏无锡214063 [2]上海交通大学,上海200030 [3]龙口油泵油嘴燃油喷射有限公司,山东龙口265712

出　　处：《现代车用动力》2008年第3期7-10,共4页Modern Vehicle Power

摘　　要：采用高速CCD数码相机对超多喷孔喷油嘴以及传统喷油嘴的喷雾进行拍摄分析,发现超多喷孔喷油嘴的上下两层喷雾束,在离开喷孔后不久就相互碰撞,与传统喷油嘴相比其喷雾贯穿距离要短、单束喷雾锥角要大,这些特性有利于柴油机组织缸内预混合燃烧。The fuel sprays of UMH（ultra-multi-hole） and conventional nozzle were grabbed by high speed CCD digital camera. The results show that two sprays of upper and lower-layer of UMH nozzle impinge after injeeted from hole shortly. The UMH nozzle has shorter penetration and bigger single-spray angle than those of eonventional nozzle. These eharaeteristies are useful to form the premixed eombustion of diesel engines.

关 键 词：超多喷孔喷油嘴 喷雾特性 预混合燃烧 

分 类 号：TK423.8[动力工程及工程热物理—动力机械及工程]